The claim
Dat er net wat meer mannelijke baby’s geboren worden, zou het evolutionaire antwoord kunnen zijn op hun grotere overlijdensrisico in hun latere leven.
Original review summary
The review says that slightly more boys than girls are born worldwide, but that the causes are complex and not fully understood. It presents male vulnerability and higher early-life mortality as possible reasons why a small surplus of boys could be evolutionarily useful, while noting that environmental conditions can shift the ratio.[S1]
Additional context
The review says male embryos are more likely to survive the earliest weeks, but more male fetuses die in the following months, bringing the birth ratio to about 105 boys per 100 girls. [S1]
Research date:
Sources and attribution
- [S1] Gezondheid en Wetenschap original review
Original review · Retrieved October 16, 2026